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@brandon7861
I just received the probes, but they have a strange connector on them. Looks like a push on, but my push on isn't exactly the right size, a little too small. Would you know what connector it is?
Also, this thing is tiny. I'm searching for a suitable enclosure. Do you think I...
Yeah, I think if they can put a city underground, such as the military installations I've heard about, they should put nuclear power plants underneath the earth as well, below the water table if possible. That way, if a meltdown occurs, it would be covered up and not have to worry about any...
Incoming rant.
I'm guessing you live in a populated area. Speaking as a rural area representative, we don't want your nuclear power plant in our yard. That's a common opinion 'round here. What about the impact on our lives and environment? If you want nuclear power, put it on your own land. Not...
I understand, per ARRL, that FCC designated call signs shall not be used on 11 meter CB band. They also say that you shall not exceed 4 watt carrier, but that's often ignored. I wouldn't use my call sign on there, anyone with half a brain and easily triggered can locate you and obtain sensitive...
After using a few of them, and testing others, they all do work, but aren't on frequency, and one required so much added capacitance to bring it close (150hz shy) that the circuit would stop oscillating. I'm going to order some that Brandon mentioned as xtal height isn't a concern really.
Thanks, that has more info than what I found. I will be satisfied with this and if I can't figure it out with this information, I don't need the thing.
Yeah, thanks Brandon, for the probe link too. I ordered 2. You know, you sound like me, but always a few steps ahead of me. I've learned a lot lately trying to keep up with you. It's been fun.
After re-reading your post, I see what you're getting at, regarding the insertion of the amp between probe impedance/resistance and the divider formed with 1M input to the FC, no longer following assumed standard formula, as if the amp wasn't there. All that acting up on the fragile circuit...
Thanks for sharing your experience, I also noted that when the probe is not connected to anything, it picks up whatever and amplifies. Nothing is perfect as you already know, and I may not get the greatest accuracy but I can get close enough for my satisfaction, knowing the limitations and...
I have had luck hitting the wax with hot air, assuming the rock is still attached to the back wall. When the foil gets bent, distorted, it puts an odd or uneven tension on the rock ?yoke? inside and reheating the wax can reset its hold between the diaphragm and shaft. Sorry, I can't recall the...
If you have issues getting your >20mv scope to trigger on <20mv signals, or the 1x probe loads down the circuit causing random inaccurate readings/stalling, check this out.
I saw a video on YT about this device, using it as a RF preamp and as an amp for your probes. The gain is variable...
Brandon, I feel like I just watched some pll porn, looking into the secret, private parts of the thing, that we all knew it had, but never saw it doing it like that before. I feel dirty now, knowing how that pll gets on-and off- to make us happy. Perhaps this is porn for tech nerds. I'll see...
Oh, that's gimmicky, but mildly interesting nonetheless. The video I saw looked like it had a pot on it, if so, could be someone else's idea to replace the resistor in that NPC deal so they can say "it's not like the regular NPC and costs more because it's better and your buddies will be...
I see a video on yt showing someone installing one, 2 wires near the pass modulator. Interested in what's inside that thing, maybe another post instead of hijacking this one. Sorry nomad, carry on sir.
That's a beautiful radio. I'd be tickled to have one of those on the bench. I hope you find someone local, as shipping can be/often is bad on tube rigs, they don't handle those packages tenderly and I have seen\heard of tubes falling out and getting busted during shipping. Id remove the tubes...
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